Design and Analysis of Different Optical Attocells Deployment Models for Indoor Visible Light Communication System

Gismalla, Mohammed S. M.; Abdullah, Mohammad; Ahmed, Mohammed; Mabrouk, Wafi A.; Al-Fadhali, Najib; Saeid, Elsadig; Supa’at, Abu Sahmah Mohd.; Das, Bhagwan

doi:10.30880/ijie.2021.13.06.022

Cited by 11 publications

(10 citation statements)

References 29 publications

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“…As a result, several solutions have been proposed to optimize these parameters for indoor VLC systems. One viable solution is the use of multiple optical attocells transmitters [23][24][25][26][27] to cover a wide indoor region, thus enhancing uniform distribution.…”

Section: Related Workmentioning

confidence: 99%

Optimizing Optical Attocells Positioning of Indoor Visible Light Communication System

Gismalla¹,

Azmi²,

Salim³

et al. 2023

Computers, Materials &Amp; Continua

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Visible light communication (VLC), which is a prominent emerging solution that complements the radio frequency (RF) technology, exhibits the potential to meet the demands of fifth-generation (5G) and beyond technologies. The random movement of mobile terminals in the indoor environment is a challenge in the VLC system. The model of optical attocells has a critical role in the uniform distribution and the quality of communication links in terms of received power and signal-to-noise ratio (SNR). As such, the optical attocells positions were optimized in this study with a developed try and error (TE) algorithm. The optimized optical attocells were examined and compared with previous models. This novel approach had successfully increased minimum received power from −1.29 to −0.225 dBm, along with enhanced SNR performance by 2.06 dB. The bit error rate (BER) was reduced to 4.42 × 10 −8 and 6.63 × 10 −14 by utilizing OOK-NRZ and BPSK modulation techniques, respectively. The optimized attocells positions displayed better uniform distribution, as both received power and SNR performances improved by 0.45 and 0.026, respectively. As the results of the proposed model are optimal, it is suitable for standard office and room model applications.

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Section: Related Workmentioning

confidence: 99%

Optimizing Optical Attocells Positioning of Indoor Visible Light Communication System

Gismalla¹,

Azmi²,

Salim³

et al. 2023

Computers, Materials &Amp; Continua

View full text Add to dashboard Cite

show abstract

“…RF technology suffers from capacity crunch, interference, and other constraints, that affect the performance of the communication system. In order to avoid some of these constraints, a new technology named VLC was introduced [95]- [97]. VLC features a high bandwidth that could reach up to Terahertz (THz), in addition to low power, license-free deployment, and interference immunity [98], [99].…”

Section: Visible Light Communicationmentioning

confidence: 99%

Survey on Device to Device (D2D) Communication for 5GB/6G Networks: Concept, Applications, Challenges, and Future Directions

et al. 2022

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Device-to-device (D2D) communication is one of the most promising technologies in wireless cellular networks that can be employed to improve spectral and energy efficiency, increase data rates, and reduce links latency. This paper investigates fifth generation and beyond (5GB) networks, the basics of D2D communication, applications, and classification. Herein, D2D in in-band (IBD) and out-band (OBD) modes are discussed. This paper also presents the integration of D2D communication with other prominent technologies and demonstrates the importance of integration with possible solutions in improving network performance. We further investigate the challenges of D2D communication, opportunities, and future research directions of D2D in 5GB networks. In addition, D2D communication in 6G network challenges and open research areas are introduced.INDEX TERMS 5G, 5GB, 6G, D2D communication, millimeter wave (mm-Wave), visible light communication (VLC), ultra-dense network (UDN), and unmanned aerial vehicle (UAV).

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“…Orthogonal frequency-division multiplexing (OFDM), which includes multiple orthogonal sub-carriers [10], can carry a high-speed data stream by dividing it into a series of low-speed sub-carrier signals. Furthermore, coherent modulation formats, such as binary phase shift keying and quadrature phase shift keying (QPSK), have better transmission performance in turbulence channels than intensity-modulated formats [11]. Coherent optical OFDM (CO-OFDM) has exhibited high spectral efficiency and strong anti-interference ability [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of the Free-Space Optical Communication Link Using Spatial Diversity Reception-Assisted OFDM Signals

et al. 2022

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Orthogonal frequency division multiplexing (OFDM) technology is presented for use in free-space optical (FSO) communications accompanied by the spatial diversity reception. Using quadrature phase shift keying (QPSK) modulation formats, the OFDM signals show robustness to support high spectral efficiency and compatibility with the spatial diversity reception to improve receiver sensitivity. Compared with the single-carrier QPSK signal, the OFDM-QPSK signal with 64 sub-carriers can reduce the BER from 2.87 × 10−3 to 2.98 × 10−4 at the SNR of 6 dB. Using a two-aperture spatial diversity reception with OFDM, the BER can be reduced from 2.45 × 10−3 of a single receiver to 6.10 × 10−4 under moderate turbulence conditions. Under strong turbulence, the BER of the single receiver is 2.14 × 10−2. It can be improved to 1.16 × 10−3 by using four-aperture receivers, and even 6.87 × 10−4 by using six-aperture receivers. The optimized aperture number should be selected according to channel conditions.

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Design and Analysis of Different Optical Attocells Deployment Models for Indoor Visible Light Communication System

Cited by 11 publications

References 29 publications

Optimizing Optical Attocells Positioning of Indoor Visible Light Communication System

Optimizing Optical Attocells Positioning of Indoor Visible Light Communication System

Survey on Device to Device (D2D) Communication for 5GB/6G Networks: Concept, Applications, Challenges, and Future Directions

Performance Improvement of the Free-Space Optical Communication Link Using Spatial Diversity Reception-Assisted OFDM Signals

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